Improvement in pumps



UNITED STATES PATENT OFFICE.

THOMAS HANSBROW, OF SACRAMENTO, CALIFORNIA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 54,719, dated May 15, 1866.

.State of California, have invented a new and useful Improvementin Pumps 5 and l do hereby declare that thefollowin gis a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side sectional View of my in- Yention,taken in the line m fr, Fig. 2; Fig. 2, a vertical section of the same, taken in the lille y y, Fig. 1; Fig. 3, a horizontal section of the same, taken in the line e z, Fig. 1.

Similar letters of reference indica-te correspondin g parts.

This invention relates to a new and useful improvement in upright reciprocating pumps 5 and it consists in running the suction-pipe up through the side pipe communicating with the cylinder, substantially as hereinafter set forth, whereby the pump-cylinder cannot lose its priming-that is to say, said cylinder will be kept supplied with water even though the valves should leak.

A represents the cylinder of thc pump, and B the piston which works therein. Cisa side pipe, which projects laterally from the upper end of the cylinder A, and communicates with the lower part of the cylinder A by means of a passage, D, as shown clearly in Fig. l.

E is the suction-pipe, which passes up into the side pipe, C, and communicates with a valvechest, F, therein, the upper part of which has two inclinedsurfaces, a a., provided, respectively, with valves b b', opening outward. The water that is forced through the valve bpasses directly into the cylinder above the piston B,

and the water that is forced through valve b passes down the passage D into the cylinder below the piston.

When the piston is drawn upward the water above it is forced into the air-vessel G and ont through the nozzle d, the valve b, of course, being kept closed under pressure, and during this upward movement of the piston the valve b opens and the water passes down the pasv sage D into the cylinder underneath the piston. During the descent of the piston the water underneath the piston is forced np through passage D into the air-vessel, while the water is drawn into the cylinderabove the piston through valve b, suitable valves c c being placed in the base of the chamber G to prevent the return of the water into the cylinder A or passage D.

When the pump is stopped it will be seen that the pump-cylinder A will be retained full of water, or nearly so, even if the valve b b should leak. This will be full-y understood by referring to Fig. 1, in which the lowest waterlevel is shown.

By this sim ple arrangement thetilne usuall y employed in pumping to ll an empty cylinder is saved. The pump will be always ready for action, and the cost of construction is not augmented.

Having thus described my invention, I claimas new and desire to secure by Letters Patent- The arrangement of the air-vessel G, nozzle d, side pipe C, valve-chest F, valves Zi b o c', passage D, and cylinder A, operating in the -manner and for the purpose herein described.

TELUS. HANSBROW. Witnesses: B. B. REDDING, SAMUEL GRoss. 

